Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4999134 | Zinc salts, lead salts and/or calcium salts of carboxylic acids and their use as corrosion inhibitors | Egon Liedek | 1991-03-12 |
| 4830775 | Zinc and/or lead salts of carboxylic acids and their use as corrosion inhibitors | Egon Liedek | 1989-05-16 |
| 4258584 | Ball circulation screw gear | Helmut Knoedler | 1981-03-31 |
| 4187736 | Rack steering | — | 1980-02-12 |